Arc snuffer



E. CHAPMAN Oct. 25, 1932.

ABC SNUFFER Filed April 29. 1930 INVENTOR. EVERETT CHAPMAN 3 m ATTORNEYS.

Patented Oct. 25, 1932 UNITED. STATES PATENT OFFICE EVERETT CHAPMAN, OF CLEVELAND, OHIO, ASSIGNOR TO THE LINCOLN ELECTRIC (JOIMIPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO ARC SNUEFER Application filed April 29.

arc snufier or disrupter which shall be sim ple in construction and which shall have the desired results in a manner and with an cfficiency not possible with any forms of construction heretofore used. Other objects of my invention will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawing and the following description setting forth in detail certainmechanism embodying the invention; such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Fig. 1 is an elevational view of a common form of starter showing the arc disrupter comprising my invention associated therewith; Fig. 2 is an elevational view of the device comprising my invention; and Fig. 3 is a transverse sectional view of the device illustrated in Fig. 2 taken on the plane substantially indicated by the line 3-3.-

Referring more specifically to the drawing, and more especially to Fig. 1, the contactors 1 and 2, between which an arc is formed when such contacts separate, are

f terial so that the magnetic attraction thereof to be parts of the common form 0 starter, and inasmuch as the device comprising my invention is applicable to various forms of contacts as employed in connection with numerous forms of switches and the like, and due to the fact that such switch or starter comprises no part of my invention no further reference to such starter or switch will be made during the course of this description.

vAs most clearly shown in Figs. 2 and 3, the device comprising my invention consists of a plurality of contiguous baflles 3 and 4, the number of which will depend upon the shown 1930. Serial N0. 448,372.

number of pairs of contacts carried by the device with which the arc disrupter is to be used. Positioned intermediately of the baffles are transversely extending barriers 5, here shown formed of the mid-rebent portion of a continuous element, preferably of magnetic material, which element has portions 6 and 7 formed into similarly directed pockets adapted to receive the separate parts of the are which has been split by the barrier 5. The material forming the barrier and pockets is perforated, as at 8, so as to relieve the pressure built up in the bottom of the pockets when the arc is disrupted. The baffie portion 5 has a sleeve 9, preferably of non metallic material, associated therewith, which sleeve is engaged by a bolt 10 which passes therethrough, which bolt is utilized to interconnect the several baflies 3 and 4 and maintain in proper assembled relation such bafiies and their associated pocket and baffle forming means.

It will be noted in connection with the above description that the elements 5, 6 and 7 are formed of one continuous piece of stock, although satisfactory results may be obtained by the employment of separate elements forming the adjacent arc disrupting pockets. Further, the form of the members 3 and 4 may be changed from the form here chosen for the purposes of illustration to adapt such members to be mounted in connection with any form of contact supporting means with which the device comprising my invention may be associated. I prefer to form the members 5, 6 and 7 of magnetic mavvill tend to draw the arc thereto and materialy assist in the proper functioning of the device.

The disposition of foraminous means, whether of magnetic or non-magnetic material, in the path of the are when formed is of itself an efiicient means for disrupting an are without the formation thereof into separate pockets as herein described. The formation of such are disrupting means of magnetic material materially assists in drawing the arc thereto and thus renders more eflicient such are disrupting means.

A further description of the several parts comprising my invention is deemed unnecessary for those familiar with the art, sufiice t to say that changes other than those 1nd1- cated in the above description may be made in the particular form of construction without deviating from the principles of my invention. I therefore particularly point out and distinctly claim as my invention:

1. The combination with a pair of contacts between which an arc is formed when such contacts separate, of barriers of nonmagnetic material disposed on opposite sides of said contacts and extending in planes .con-

tiguous t0 the plane of relative movement of said contacts, and rebent means of magnetic material interposed between said barriers "and forming a transversely extending barrier with associated pockets.

. 2. The combination with a pair of contacts between which an arc is formed when such contacts separate, of barriers of non-magnetic material disposed on opposite sides of said contacts and extending in planes contiguous to the plane of relative movement of said contacts, and rebent means of perforated material interposed between said barriers and forming a transversely extending barrier with associated pockets having perforated "walls.

' 3. The combination with a pair of contacts 1 between which an arc is formed when such contacts separate, of barriers of non-magnetic material disposed on opposite sides of said contacts for laterally restraining such are, a barrier of magnetic material arranged between said first named barriers and disposed in the path of such are, and perforated magnetic material intermediately of said first-named barriers, and arranged on opposite sides of said magnetic barrier forming arc flame receiving pockets.

Signed by me, this 25 day of April, 1930.

EVERETT CHAPMAN. 

